A sphere of 4 cm radius is suspended within a hollow sphere of 6 cm radius. The inner sphere is charged to potential 3 e.s.u. and the outer sphere is earthed. The charge on the inner sphere is
A
54 e.s.u.
B
e.s.u.
C
30 e.s.u.
D
36 e.s.u.
Text Solution
Verified by ExpertsThe correct answer is:
D
Suppose charge on inner sphere is +Q as shown.
Potential on inner sphere
⇒ ⇒ 
⇒ ⇒ 
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